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@std/assert@0.215.0

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It is unknown whether this package works with Browsers, Deno, Node.js, Cloudflare Workers, Bun
It is unknown whether this package works with Browsers
It is unknown whether this package works with Deno
It is unknown whether this package works with Node.js
It is unknown whether this package works with Cloudflare Workers
It is unknown whether this package works with Bun
•JSR Score70%•
Published2 years ago (0.215.0)
function assertExists
assertExists<T>(
actual: T,
msg?: string
): asserts actual is NonNullable<T>

Make an assertion that actual is not null or undefined. If not then throw.

Examples

Example 1

import { assertExists } from "@std/assert/assert_exists";

assertExists("something"); // Doesn't throw
assertExists(undefined); // Throws

Type Parameters

T

Parameters

actual: T
optional
msg: string

Return Type

asserts actual is NonNullable<T>

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Add Package

deno add jsr:@std/assert

Import symbol

import { assertExists } from "@std/assert/assert_exists";
or

Import directly with a jsr specifier

import { assertExists } from "jsr:@std/assert/assert_exists";